Random assignment ensures each participant has an equal chance of being in any group
What is the primary goal of a block design?
Minimize variability within blocks
Match the experimental design with its advantage:
Completely Randomized ↔️ Simple to implement
Matched Pairs ↔️ Reduces variability due to confounding factors
Block Design ↔️ Minimizes variability within blocks
What does a control group receive in experimental design?
No treatment or standard treatment
Match the type of experimental design with its key characteristic:
Completely Randomized ↔️ Random assignment to groups
Matched Pairs ↔️ Subjects paired based on similarities
Block Design ↔️ Subjects divided into blocks
The matched pairs design reduces variability by pairing subjects based on similarities
Statistical power in experimental design is influenced by the sample size.
In a completely randomized design, participants are assigned to groups based on shared traits.
False
Experimental design refers to the plan for conducting an experiment, including the allocation of subjects into control and treatment groups, and the random assignment of participants
A completely randomized design is effective when dealing with large populations.
True
Order the steps for selecting an experimental design:
1️⃣ Define the research question
2️⃣ Identify confounding factors
3️⃣ Choose the appropriate design
4️⃣ Assign subjects to groups
Experimental design minimizes the effects of confounding factors
The treatment group in an experiment receives the experimental treatment being tested.
True
What is the primary advantage of a block design?
Minimizes variability within blocks
Steps to consider when comparing two diets to improve cholesterol levels:
1️⃣ Have a clear objective
2️⃣ Use a sample size of 50 participants
3️⃣ Consider confounding factors
4️⃣ Monitor and analyze cholesterol levels
The matched pairs design is often used to compare the impact of a new educational program
The control group in an experiment receives the experimental treatment being tested.
False
In a matched pairs design, subjects are matched based on similar characteristics
Random assignment ensures participants have an equal chance of being in either the control or treatment group
The basic principles of experimental design include a control group
Random assignment in experimental design ensures that each participant has an equal chance of being in any group
A completely randomized design is easy to implement but may not reduce variability as much as other designs.
True
Study objectives are essential for choosing an experimental design that addresses research questions effectively.
True
Which experimental design is most suitable for comparing diet effects while controlling for age and gender?
Block design
In which experimental design are participants first divided into blocks based on their starting blood pressure?